Mole Concepts (no sf)
What is the mole number? What is it also called?
6.022 x 1023
Avogadro's Number
How many moles are in 79.85 g of Fe2O3?
0.5000 Moles Fe2O3
How many moles are in 3.75 × 1021 molecules of (NH4)2SO4? (3 sf's)
0.00623 moles (NH4)2SO4
What is the molar mass of HCl?
36.45 g/mol
120.385 g of C to atoms C
6.036 x1024 atoms C
sf from molar mass
1 mole of lead (Pb) has this mass in grams
207.2 g I'm asking you about molar mass :)
How many grams are in 2.89 moles of BF3 (round to 2 decimal places)
195.97 g BF3
How many molecules are in 3.996 moles of C6H12O6?
SF!!!
2.406 x 1024 molecules C6H12O6
What is the molar mass of H2CO3?
62.024 g/mol
convert 19.587g CaCl2 to molecules
1.063 x1023 molecules CaCl2
sf from molar mass
1 mole of any element is how many atoms?
6.022x1023
How many moles are in 88.43 g of AgNO3? (Round to 2 decimal places)
0.52 moles AgNO3
How many molecules are in 133.45 moles of SO2?
8.030 x 1025 molecules
(used molar mass sf)
What is the molar mass of Na(OH)2
57.006 g/mol
3.25 x 1024 atoms Na to moles Na
5.40 moles Na
sf from given
If you start with grams but need moles what do you do?
Divide by the molar mass!
How many moles are in 62.54 g of Na2SO4 ? (Round to 2 decimal places)
.44 moles Na2SO4
How do you convert from moles to molecules
Multiply by 6.022 x1023
What is the molar mass of C6H12O6?
180.156 g/mol
2.06 x 1024 molecules of NaCl to grams
199.9 g NaCl
are sf correct?
If you start with molecules and need moles, what do you do?
divide by 6.022x1023
How many grams are in 3.5 mol of Ca3(PO4)2? (Round to 2 decimal places)
1085.61 g Ca3(PO4)2
How do you convert from molecules to moles?
Divide by 6.022 x1023
What is the molar mass of Ca3(BN2)4?
275.53 g/mol
8.49 moles of Cu(NO3)2 is how many grams?
1590 g Cu(NO3)2
1592.33 g